Physics Formula
Electric Power Formula Formula
Calculates electrical power using voltage and current.
Formula Summary
Electric Power Formula
Calculates electrical power using voltage and current.
- Category
- Physics
- Equation
- P = VI
- Calculator
- Use Electric Power Formula Calculator →
Equation
P = VI
Variables
- P = power
- V = voltage
- I = current
Units
- Power: watts (W)
- Voltage: volts (V)
- Current: amperes (A)
When To Use This Formula
Use this formula when calculating electrical power consumed or delivered in a circuit using voltage and current.
Rearranged Equations
- V = P / I
- I = P / V
How to Use This Formula
- Identify the known values from the problem statement.
- Convert all values into compatible units.
- Substitute the values into the equation and calculate the result.
- Check that the final answer has the correct unit and meaning.